welding steel base or just getting aluminium extrusion

**reefy86** · 10-12-2017

Originally Posted by JoeHarris

Yes it looks cool! Not such a good idea in reality?! Wish I could afford keyshot, looks amazing. Btw you probably won't need two mounts for the spindle and it will make it harder to align.

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you can get better results using vray in 3ds max but i can't be bothered to spend hours making materials and setting render up lol. thanks for the heads up on the mount i will remove one of them

**Nr1madman** · 12-12-2017

When I looked around aliexpress was best value.. sometimes you can find a deal on ebay aswell! Have you checked the prices on uk sites? If you compare its much cheaper to pay £200 for shipping.
I think I added about 30 to get everything shipped in a wood box to eliminate freight damages

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**reefy86** · 12-12-2017

zappautomation was my first choice but they are £300 each, i have found cnc4you at £160 each so not too bad and with aliexpress it would be nice if could or multiple and save on postage but postage seems to double

**cropwell** · 12-12-2017

Hi Reefy,

I think that some traders on Aliexpress keep the price low and the postage high for two reasons 1 it keeps the customs declared value down, so you pay less import charges and VAT and 2 it keeps the refundable amount low if you return goods that are not faulty.

**reefy86** · 12-12-2017

Originally Posted by cropwell

Hi Reefy,

I think that some traders on Aliexpress keep the price low and the postage high for two reasons 1 it keeps the customs declared value down, so you pay less import charges and VAT and 2 it keeps the refundable amount low if you return goods that are not faulty.

cheers makes sense

**JoeHarris** · 12-12-2017

If you order screws, spindle, VFD etc. at the same time it will mean you only pay delivery once.

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**Boyan Silyavski** · 12-12-2017

HI, thats how to rectify something, if you mess things up

and weld too fast

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I am joking, just tack all in place, rectify with a mallet and then weld. But things like that happen, when i am in a hurry.

you can evaluate the option of buying chinese Hiwin type rails. last time i had great success, But the key is to buy from somewhere you know its not crap, hence directly from the manufacturer. Problem is , i said it somewhere, in China they sale linear rails at every corner shop.

I bought 10m of MGN12 from this guys and they were TOP quality, hardened rails and the carriages were good and sliding well https://es.aliexpress.com/store/grou...66f4a665DnQrsc

All you risk is eventually changing the balls of a bearing block that does not slide well. But usually it will be because is just dirty.

**reefy86** · 12-12-2017

Originally Posted by Boyan Silyavski

HI, thats how to rectify something, if you mess things up

and weld too fast

I am joking, just tack all in place, rectify with a mallet and then weld. But things like that happen, when i am in a hurry.

you can evaluate the option of buying chinese Hiwin type rails. last time i had great success, But the key is to buy from somewhere you know its not crap, hence directly from the manufacturer. Problem is , i said it somewhere, in China they sale linear rails at every corner shop.

I bought 10m of MGN12 from this guys and they were TOP quality, hardened rails and the carriages were good and sliding well https://es.aliexpress.com/store/grou...66f4a665DnQrsc

All you risk is eventually changing the balls of a bearing block that does not slide well. But usually it will be because is just dirty.

Haha hope it don't come to that lol. i'm pretty confident now after watching tons of video's but i am a sucker for getting inpatient and tend to automatically move a little faster now and again so i really need to keep that in check lol.

**reefy86** · 12-12-2017

Will i notice anything from a c5 ballscrew to a c7? also will i be losing any benefits if i go with 2525 screws and use a belt ratio to bring it down to 2510 spec? reason i ask is because the 2525 are on offer but they are c7's and its only £140 for 3000mm lengths where as a 2510 only do c5's but they are £400 each

**m_c** · 12-12-2017

C5 has better tolerance that C7.

IIRC C7 is usually just rolled, whereas C5 is generally ground. I'm sure a google search will turn up a chart with the various tolerances.